From 35baa88334444c3f6778aa80b31ba3a65330ce69 Mon Sep 17 00:00:00 2001
From: Fabian Boehm <FHomborg@gmail.com>
Date: Thu, 28 Sep 2023 17:30:40 +0200
Subject: [PATCH] cmake: Canonicalize binary dir

This would otherwise fail to set $fish_function_path to
share/functions etc if run through a symlink.
---
 cmake/Rust.cmake | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cmake/Rust.cmake b/cmake/Rust.cmake
index c87cd1917..5d24905f9 100644
--- a/cmake/Rust.cmake
+++ b/cmake/Rust.cmake
@@ -59,9 +59,12 @@ if(DEFINED WITH_GETTEXT AND NOT "${WITH_GETTEXT}")
     set(CMAKE_WITH_GETTEXT "0")
 endif()
 
+# CMAKE_BINARY_DIR can include symlinks, since we want to compare this to the dir fish is executed in we need to canonicalize it.
+file(REAL_PATH "${CMAKE_BINARY_DIR}" fish_binary_dir)
+
 # Tell Cargo where our build directory is so it can find config.h.
 corrosion_set_env_vars(${fish_rust_target}
-    "FISH_BUILD_DIR=${CMAKE_BINARY_DIR}"
+    "FISH_BUILD_DIR=${fish_binary_dir}"
     "FISH_AUTOCXX_GEN_DIR=${fish_autocxx_gen_dir}"
     "FISH_RUST_TARGET_DIR=${rust_target_dir}"
     "PREFIX=${CMAKE_INSTALL_PREFIX}"